KR102683807B1 - Haptic feedback device and electronic device having haptic feedback function - Google Patents

Abstract

The present application provides a haptic feedback device capable of implementing haptic feedback only in a localized portion and an electronic device having a haptic feedback function. The haptic feedback device according to an example includes a first vibration bar coupled to one side of a diaphragm. 1 haptic module, a second haptic module having a second vibration bar coupled to the other side of the diaphragm so as to be symmetrical to the first haptic module, a housing supporting the first haptic module and the second haptic module, the other side of the first vibration bar and It includes a first damper disposed between the housing, and a second damper disposed between the housing and the other side of the second oscillating bar.

Description

Haptic feedback device and electronic device having haptic feedback function {HAPTIC FEEDBACK DEVICE AND ELECTRONIC DEVICE HAVING HAPTIC FEEDBACK FUNCTION}

This application relates to a haptic feedback device and an electronic device having a haptic feedback function.

In general, haptic feedback is a technology that allows users to feel a sense of touch, force, and movement through input devices such as a keyboard, mouse, joystick, and touch screen panel. In particular, technology related to tactile feedback that uses the sense of touch felt by the skin is relatively easy to implement, so it is widely used in smart phones, electronic notebooks, e-books, portable multimedia players (PMPs), navigation, mobile phones, and tablet PCs (personal devices). It is being applied to portable electronic devices such as computers, smart watches, watch phones, wearable devices, and game consoles.

For example, in Republic of Korea Patent Publication No. 10-2011-0074333 (hereinafter referred to as “patent document”), a plurality of vibrators mounted on a portable terminal and having different resonance frequencies are vibrated according to vibration events to produce various vibrations. A method and device for generating vibration of a portable terminal are disclosed.

However, the patent literature has the following problems.

First, because vibration occurs throughout the mobile terminal, haptic feedback cannot be implemented only in localized areas such as the display panel or touch screen panel.

Second, because the vibration spreads throughout the mobile terminal, haptic feedback according to the user's touch cannot be delivered only to the user's fingers.

Third, in order to provide directional haptic feedback, the attachment location of the vibrator or the structure of the portable terminal itself must be changed.

This application is intended to solve the problems of the background technology, and the technical task is to provide a haptic feedback device that can implement haptic feedback only in a local area and an electronic device with a haptic feedback function.

A haptic feedback device according to an example of the present application for achieving the above-described technical problem includes a first haptic module having a first vibration bar coupled to one side of the diaphragm, and a first haptic module coupled to the other side of the diaphragm to be symmetrical to the first haptic module. A second haptic module having a second vibrating bar, a housing supporting the first haptic module and the second haptic module, a first damper disposed between the housing and the other side of the first vibrating bar, and the other side of the second vibrating bar. and a second damper disposed between the housings.

An electronic device according to an example of the present application for achieving the above-described technical problem includes a display panel disposed on a haptic feedback device and a touch screen panel overlapping the display panel, and the haptic feedback device is coupled to one side of the diaphragm. A first haptic module having a first vibration bar, a second haptic module having a second vibration bar coupled to the other side of the vibration plate so as to be symmetrical to the first haptic module, a housing supporting the first haptic module and the second haptic module, 1. It includes a first damper disposed between the other side of the vibrating bar and the housing, and a second damper disposed between the other side of the second vibrating bar and the housing.

According to the means for solving the above problem, the invention according to the present application can implement haptic padback only in localized parts such as the diaphragm, and can transmit haptic feedback according to the touch of the touch input object only to the touch input object. Additionally, the invention according to the present application can provide directional haptic feedback only by controlling haptic signals without changing the arrangement positions of the haptic modules.

In addition to the effects of the present application mentioned above, other features and advantages of the present application are described below, or can be clearly understood by those skilled in the art from such description and description.

1 is an exploded view showing a haptic feedback device according to an example of the present application.
FIG. 2 is a cross-sectional view taken along line II' shown in FIG. 1.
FIG. 3 is a cross-sectional view for explaining the first haptic module and the second haptic module shown in FIG. 1.
Figure 4 is a waveform diagram showing first and second haptic signals according to the in-plane vibration mode of the haptic feedback device according to this example.
FIG. 5A is a cross-sectional view illustrating haptic feedback generated in the first haptic section shown in FIG. 4.
FIG. 5B is a cross-sectional view illustrating haptic feedback generated in the second haptic section shown in FIG. 4.
Figure 6 is a waveform diagram showing first and second haptic signals according to the out-of-plane vibration mode of the haptic feedback device according to this example.
FIG. 7A is a cross-sectional view for explaining haptic feedback generated in the first haptic section shown in FIG. 6.
FIG. 7B is a cross-sectional view illustrating haptic feedback generated in the second haptic section shown in FIG. 6.
FIGS. 8 to 13 are diagrams for explaining modified examples of the haptic modules shown in FIG. 1 .
Figure 14 is an exploded view showing a haptic feedback device according to an example of the present application.
FIG. 15 is a diagram illustrating an electronic device having a haptic feedback function according to an example of the present application.
FIG. 16 is a cross-sectional view taken along line II-II' shown in FIG. 15.
FIG. 17 is a cross-sectional view taken along line II-II' shown in FIG. 15.
18A and 18B are graphs showing simulation results for vibration acceleration of an electronic device according to this example.

The advantages and features of the present application and methods for achieving them will become clear by referring to examples described in detail below along with the accompanying drawings. However, the present application is not limited to the examples disclosed below and will be implemented in various different forms, and only the examples of the present application are intended to ensure that the disclosure of the present application is complete and are within the scope of common knowledge in the technical field to which the present application pertains. It is provided to fully inform those who have the scope of the invention, and this application is only defined by the scope of the claims.

The shape, size, ratio, angle, number, etc. disclosed in the drawings for explaining an example of the present application are illustrative, and the present application is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, in describing the present application, if it is determined that a detailed description of related known technology may unnecessarily obscure the gist of the present application, the detailed description will be omitted.

When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. In cases where a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

In the case of a description of a temporal relationship, for example, if a temporal relationship is described as 'after', 'successfully after', 'after', 'before', etc., 'immediately' or 'directly' Unless used, non-consecutive cases may also be included.

Although first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, the first component mentioned below may also be the second component within the technical spirit of the present application.

The term “at least one” should be understood to include all possible combinations from one or more related items. For example, “at least one of the first, second, and third items” means each of the first, second, or third items, as well as two of the first, second, and third items. It can mean a combination of all items that can be presented from more than one.

Each feature of the various examples of the present application can be partially or entirely combined or combined with each other, and various technological interconnections and operations are possible, and each example may be implemented independently of each other or together in a related relationship. .

Hereinafter, a preferred example of a haptic feedback device and an electronic device having a haptic feedback function according to the present application will be described in detail with reference to the attached drawings. In adding reference numerals to components in each drawing, identical components may have the same reference numerals as much as possible even if they are shown in different drawings.

Figure 1 is an exploded view showing a haptic feedback device according to an example of the present application, Figure 2 is a cross-sectional view taken along line II' shown in Figure 1, and Figure 3 is a first haptic module and a second shown in Figure 1. This is a cross-sectional view to explain the haptic module.

1 to 3, the haptic feedback device 10 according to an example includes a diaphragm 100, a first haptic module 200-1, a second haptic module 200-2, a housing 300, It includes a first damper 400-1 and a second damper 400-2.

The diaphragm 100 has a flat plate shape and may be made of plastic or metal. Optionally, the diaphragm 100 may be a rear cover of a display device (or display module) built into an electronic device with a haptic function. This diaphragm 100 vibrates according to the haptic drive of the first haptic module 200-1 and the second haptic module 200-2, which are synchronized with each other. For example, the diaphragm 100 may undergo in-plane vibration or out-of-plane vibration.

The first haptic module 200-1 is driven by the first haptic signal to generate torque to vibrate the diaphragm 100. The first haptic module 200-1 according to one example includes a first vibration bar 210-1 and at least one first vibration unit 210-2.

The first vibration bar 210-1 is coupled to one side of the vibration plate 100 and supports at least one first vibration unit 210-2. The first vibration bar 210-1 according to one example may have a flat plate shape with a constant length and a constant width parallel to the first direction (X). This first vibration bar 210-1 is coupled to one rear side of the vibration plate 100 by an adhesive member such as adhesive or double-sided tape and supports at least one first vibration unit 210-2. For example, the first vibration bar 210-1 may be coupled to the middle portion of one edge of the vibration plate 100 parallel to the second direction (Y) that intersects the first direction (X). Here, the first direction (X) may be defined as a direction parallel to the longitudinal direction of the long side of the diaphragm 100, and the second direction (Y) may be defined as a direction parallel to the longitudinal direction of the short side of the diaphragm 100.

The at least one first vibration unit 210-2 is suspended on one side of the first vibration bar 210-1 and vibrates the vibration plate 100 by making a pendulum movement according to the first haptic signal. That is, the at least one first vibration unit 210-2 moves pendulumally by being driven according to the first haptic signal to generate torque for in-plane or out-of-plane vibration of the diaphragm 100. At least one first vibration unit 210-2 according to an example includes a first cantilever unit 211 and a first haptic actuator 212.

The first cantilever portion 211 is swingably installed on one side of the first vibration bar 210-1 and performs a pendulum movement according to the driving of the first haptic actuator 212. The first cantilever portion 211 according to one example includes a cantilever 250, a lever support portion 260, and a hinge shaft 270.

The cantilever 250 includes one end connected to the lever support 260 so as to be swingable along the first direction (X), and the other end fixed to the first haptic actuator 212. At this time, one end of the cantilever 250 includes a hinge coupling portion 250a protruding at a certain height to be connected to the lever support portion 260, and a hinge insertion hole 250b penetrating through the center of the hinge coupling portion 250a. .

The lever support part 260 is installed on one side of the first vibration bar 210-1 and supports the cantilever 250 so as to be swingable. The ledge support unit 260 according to an example includes a support plate 261, a pair of hinge support side walls 262 protruding from the support plate 261 toward the cantilever 250 so as to be parallel and spaced apart from each other, and a support plate 261. It includes a plurality of fastening members 263 fixed to one side of the first vibration bar 210-1.

The support plate 261 includes a plurality of holes or screw holes into which a plurality of fastening members 263 are inserted.

The pair of hinge support side walls 262 are spaced apart from each other so that the protrusion 250a of the cantilever 250 can be inserted and protrude from the support plate 261 to have a height lower than that of the protrusion 250a. The pair of hinge support side walls 262 includes a shaft support hole 262a that supports the hinge shaft 270.

Each of the plurality of fastening members 263 is fastened to the first vibration bar 210-1 through a plurality of holes provided in the support plate 261 to connect the support plate 261 to the first vibration bar 210-1. Fix it on one side of the back.

The hinge axis 270 is inserted into one of the pair of hinge support side walls 262, passes through the protrusion 250a of the cantilever 250, and is inserted into the remaining one of the pair of hinge support side walls 262, thereby forming the cantilever. (250) is supported so that it can swing.

The first haptic actuator 212 is fixed to the other end of the first cantilever portion 211, that is, the cantilever 250. This first haptic actuator 212 is driven according to the first haptic signal to generate torque, thereby causing the cantilever 250 of the first cantilever unit 211 to move pendulumly. Here, the first haptic signal may be an alternating current signal, for example, a sine wave signal.

For example, when the first haptic actuator 212 is driven by a first haptic signal having a positive phase, the cantilever 250 of the first cantilever portion 211 swings in a direction toward the center of the diaphragm 100. And, when the first haptic actuator 212 is driven by the first haptic signal having an anti-phase, the cantilever 250 of the first cantilever unit 211 can swing in a direction toward the edge of the diaphragm 100. there is.

Additionally, the at least one first vibration unit 210-2 further includes a first mass 213 provided on the first haptic actuator 212.

The first mass 213 may be attached to at least one of the outer surfaces of the first haptic actuator 212 or may be provided to surround the first haptic actuator 212. The first mass 213 according to one example may include a metal material or a metal alloy material with a relatively large specific gravity. This first mass body 213 increases the weight of the first haptic actuator 212, thereby increasing the vibration force generated by the pendulum movement of the first vibration unit 210-2 hanging on the first vibration bar 210-1. increases.

As such, at least one first vibration unit 210-2 moves the cantilever 250 of the first cantilever unit 211 by torque generated by driving the first haptic actuator 212 according to the first haptic signal. The pendulum moves to vibrate the diaphragm 100.

The first haptic module 200-1 further includes at least one first elastic member 210-3.

The at least one first elastic member 210-3 is coupled to the first vibration bar 210-1 and supported by the housing 300. That is, one end of the at least one first elastic member 210-3 is coupled to the rear of the first vibration bar 210-1 facing the housing plate 310 of the housing 300, and at least one first elastic member 210-3 The other end of the elastic member 210-3 may be supported or coupled to the housing plate 310 that overlaps the first vibration bar 210-1. This at least one first elastic member 210-3 provides two degrees of freedom for horizontal and vertical vibrations of the diaphragm 100, thereby allowing the diaphragm 100 to vibrate in-plane or out-of-plane.

The second haptic module 200-2 is driven by the second haptic signal to generate torque to vibrate the diaphragm 100. The second haptic module 200-2 according to one example includes a second vibration bar 220-1 and at least one second vibration unit 220-2.

The second vibration bar 220-1 is coupled to the other side of the vibration plate 100 and supports at least one second vibration unit 220-2. The second vibration bar 220-1 according to one example may have a flat plate shape with a constant length and a constant width along the first direction (X). This second vibration bar 220-1 is coupled to the other rear side of the vibration plate 100 by an adhesive member such as adhesive or double-sided tape and supports at least one second vibration unit 220-2. At this time, the second vibration bar 220-1 may be coupled to the middle portion of one edge of the diaphragm 100 so as to be symmetrical with the second vibration bar 220-1 based on the center portion of the diaphragm 100.

The at least one second vibration unit 220-2 is suspended on one side of the second vibration bar 220-1 and vibrates the vibration plate 100 by performing a pendulum movement according to the second haptic signal. That is, the at least one second vibration unit 220-2 moves the pendulum by being driven according to the second haptic signal to generate torque for in-plane or out-of-plane vibration of the diaphragm 100. At least one second vibration unit 220-2 according to an example includes a second cantilever unit 221 and a second haptic actuator 222.

The second cantilever portion 221 is installed to be swingable on one side of the second vibration bar 220-1 and makes a pendulum movement according to the driving of the second haptic actuator 222. The second cantilever portion 221 according to an example includes a cantilever 250, a lever support portion 260, and a hinge shaft 270, except that it is installed on the second vibration bar 220-1. Since it has the same configuration as the first cantilever portion 211, duplicate description thereof will be omitted.

The second haptic actuator 222 is fixed to the second cantilever portion 221, that is, the other end of the cantilever 250. This second haptic actuator 222 is driven according to the first haptic signal and generates torque to cause the cantilever 250 of the second cantilever unit 221 to move pendulumly. Here, the first haptic signal may be an alternating current signal, for example, a sine wave signal, which has the same phase or anti-phase as the first haptic signal. For example, when the second haptic actuator 222 is driven by a second haptic signal having a positive phase, the cantilever 250 of the second cantilever unit 221 swings in a direction toward the edge of the diaphragm 100. And, when the second haptic actuator 222 is driven by a second haptic signal having an anti-phase, the cantilever 250 of the second cantilever unit 221 can swing in a direction toward the center of the diaphragm 100. there is.

Additionally, the at least one second vibration unit 220-2 further includes a second mass 223 surrounding the second haptic actuator 222.

The second mass 223 may be attached to at least one of the outer surfaces of the second haptic actuator 222 or may be provided to surround the second haptic actuator 222. The second mass 223 according to one example may include a metal material or a metal alloy material with a relatively large specific gravity. This second mass body 223 increases the weight of the second haptic actuator 222, thereby increasing the vibration force generated by the pendulum movement of the second vibration unit 220-2 hanging on the second vibration bar 220-1. increases.

As such, at least one second vibration unit 220-2 moves the cantilever 250 of the second cantilever unit 221 by torque generated by driving the second haptic actuator 222 according to the second haptic signal. The pendulum moves to vibrate the diaphragm 100.

The second haptic module 200-2 further includes at least one second elastic member 220-3.

The at least one second elastic member 220-3 is coupled to the second vibration bar 220-1 and supported by the housing 300. That is, one end of the at least one second elastic member 220-3 is coupled to the rear of the second vibration bar 220-1 facing the housing plate 310 of the housing 300, and at least one second elastic member 220-3 The other end of the elastic member 220-3 may be supported or coupled to the housing plate 310 that overlaps the second vibration bar 220-1. This at least one second elastic member 220-3 provides two degrees of freedom for horizontal and vertical vibrations of the diaphragm 100, thereby allowing the diaphragm 100 to vibrate in-plane or out-of-plane.

The housing 300 accommodates the first haptic module 200-1 and the second haptic module 200-2, and supports the first damper 400-1 and the second damper 400-2. The housing 300 according to an example has a box shape with an open upper surface, and includes a housing plate 310, a housing side wall 320 provided vertically along the edge of the housing plate 310, and one of the housing plates 310. A first damper support portion 330-1 provided on the side, and a second damper provided on the other side of the housing plate 310 to be symmetrical to the first damper support portion 330-1 with respect to the center portion of the housing plate 310. Includes a support portion 330-2.

The first damper support part 330-1 may be provided at a constant height in the middle of one edge of the housing plate 310 parallel to the first direction (X). The height (or thickness) of the first damper supporter 330-1 is set based on the distance between the first haptic module 210 supported on the first damper 400-1 and the housing plate 310.

The second damper support part 330-2 may be provided at a constant height in the middle of the other edge of the housing plate 310 parallel to the first direction (X). The height (or thickness) of the second damper supporter 330-2 is set based on the distance between the second haptic module 220 supported on the second damper 400-2 and the housing plate 310.

The first damper 400-1 is disposed between the other side of the first haptic module 200-1 and the housing 300 to prevent vibration generated in the first haptic module 200-1 from being transmitted to the housing 300. prevent transmission. That is, the first damper 400-1 is interposed between the first vibration bar 210-1 provided in the first haptic module 200-1 and the first damper support portion 330-1 provided in the housing 300. In other words, the height of the first damper 400-1 is based on the height of the first damper supporter 330-1, and the lower surface of the first haptic actuator 212 is in contact with the housing plate 310 of the housing 300. It can be set within the range that does not work. One side of the first damper 400-1 is attached to the other rear side of the first vibration bar 210-1, and the other side of the first damper 400-1 is attached to the first damper support portion 330-1. It can be. This first damper 400-1 buffers the vibration of the first vibration bar 210-1 that occurs when the first haptic module 200-1 is driven, thereby reducing the vibration of the first vibration bar 210-1. It prevents the vibration from being transmitted to the housing 300, and thereby allows the vibration of the first vibration bar 210-1 to be transmitted only to the vibration plate 100.

The second damper 400-2 is disposed between the other side of the second haptic module 200-2 and the housing 300 to prevent vibration generated in the second haptic module 200-2 from being transmitted to the housing 300. prevent transmission. That is, the second damper 400-2 is interposed between the second vibration bar 220-1 provided in the second haptic module 200-2 and the second damper support portion 330-2 provided in the housing 300. In other words, the height of the first damper 400-1 is based on the height of the first damper supporter 330-1, and the lower surface of the first haptic actuator 212 is in contact with the housing plate 310 of the housing 300. It can be set within the range that does not work. At this time, one side of the second damper 400-2 is attached to the other rear side of the second vibration bar 220-1, and the other side of the second damper 400-2 is attached to the second damper support portion 330-2. can be attached to This second damper 400-2 buffers the vibration of the second vibration bar 220-1 that occurs when the second haptic module 200-2 is driven, thereby reducing the vibration of the second vibration bar 220-1. It prevents the vibration from being transmitted to the housing 300, and thereby allows the vibration of the second vibration bar 220-1 to be transmitted only to the vibration plate 100.

Each of the first damper 400-1 and the second damper 400-2 according to an example may include a cushioning material that absorbs shock. For example, each of the first damper 400-1 and the second damper 400-2 may be made of polyurethane, a double-sided adhesive member having a certain elastic force and a plurality of hollow portions, or a foam tape.

Figure 4 is a waveform diagram showing the first and second haptic signals according to the in-plane vibration mode of the haptic feedback device according to this example, and Figure 5a is a waveform diagram for explaining the haptic feedback generated in the first haptic section shown in Figure 4. It is a cross-sectional view, and FIG. 5B is a cross-sectional view for explaining the haptic feedback generated in the second haptic section shown in FIG. 4.

Referring to FIGS. 4 and 5A, in the first haptic section P1 of the haptic feedback device 10 according to this example, the first and second haptic signals HS1 and HS2 are in phase with each other and have a positive phase. ) is supplied to the first haptic actuator 212 and the second haptic actuator 222, respectively, so that the diaphragm 100 generates torque in the same direction from each of the first haptic actuator 212 and the second haptic actuator 222. (T1, T2) causes in-plane vibration in the horizontal positive direction (+X).

Specifically, in the first haptic section (P1), the first haptic actuator 212 is driven according to the first haptic signal (HS1) in the positive phase to generate a first torque (T1) in the horizontal positive direction (+X), , As a result, a first out-of-plane vibration component (OPV1) having an upward direction (+Z) is generated in the diaphragm 100 according to the first torque (T1) in the horizontal positive direction (+X), and a first out-of-plane vibration component (OPV1) is generated in the horizontal positive direction (+X) A first in-plane vibration component (IPV1) in the horizontal positive direction (+X) is generated according to the first force F1 in the horizontal positive direction (+X) generated by the first torque T1. At the same time, in the first haptic section (P1), the second haptic actuator 222 is driven according to the second haptic signal (HS2) in the positive phase to generate a second torque (T2) in the horizontal positive direction (+X), , As a result, a second out-of-plane vibration component (OPV2) having a downward direction (-Z) is generated in the diaphragm 100 according to the second torque (T2) in the horizontal positive direction (+X), and a second out-of-plane vibration component (OPV2) is generated in the horizontal positive direction (+X). A second in-plane vibration component (IPV2) in the horizontal positive direction (+X) is generated according to the second force F2 in the horizontal positive direction (+X) generated by the second torque T2. In this way, when torques (T1, T2) in the same direction are generated in the first haptic actuator 212 and the second haptic actuator 222, the forces (F1, F2) have the same intensity but move in opposite directions (+Z). , -Z), the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2) cancel each other, while having the same strength of force (F1, F2) and moving in the same direction (+X). The forces (F1, F2) of the first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV2) are combined and amplified, and as a result, the diaphragm 100 has the first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV1). 2 The in-plane vibration component (IPV2) causes in-plane vibration in the horizontal positive direction (+X).

Referring to FIGS. 4 and 5B, in the second haptic section P2 of the haptic feedback device 10 according to this example, the first and second haptic signals HS1 and HS2 are in phase with each other and have anti-phase. ) is supplied to the first haptic actuator 212 and the second haptic actuator 222, respectively, so that the diaphragm 100 generates torque in the same direction from each of the first haptic actuator 212 and the second haptic actuator 222. (T1, T2) causes in-plane vibration in the horizontal reverse direction (-X).

Specifically, in the second haptic section (P2), the first haptic actuator 212 is driven according to the first haptic signal (HS1) of the anti-phase to generate a first torque (T1) in the horizontal reverse direction (-X), , As a result, the first out-of-plane vibration component (OPV1) having a downward direction (-Z) is generated in the diaphragm 100 according to the first torque (T1) in the horizontal reverse direction (-X), and the first out-of-plane vibration component (OPV1) in the horizontal reverse direction (-X) is generated. A first in-plane vibration component (IPV1) in the horizontal reverse direction (-X) is generated according to the first force (F1) in the horizontal reverse direction (-X) generated by the first torque (T1). At the same time, in the second haptic section (P2), the second haptic actuator 222 is driven according to the second haptic signal (HS2) of the anti-phase to generate a second torque (T2) in the horizontal reverse direction (-X), , As a result, a second out-of-plane vibration component (OPV2) having an upward and downward direction (+Z) is generated in the diaphragm 100 according to the second torque (T2) in the horizontal reverse direction (-X), and a second out-of-plane vibration component (OPV2) in the horizontal reverse direction (-X) is generated. A second in-plane vibration component (IPV2) in the horizontal reverse direction (-X) is generated according to the second force (F2) in the horizontal reverse direction (-X) generated by the second torque (T2). In this way, when torques (T1, T2) in the same direction are generated in the first haptic actuator 212 and the second haptic actuator 222, the forces (F1, F2) have the same intensity but move in opposite directions (+Z). , -Z), the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2) cancel each other, while having the same strength of force (F1, F2) and moving in the same direction (-X). The forces (F1, F2) of the first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV2) are combined and amplified, and as a result, the diaphragm 100 has the first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV1). 2 The in-plane vibration component (IPV2) causes in-plane vibration in the horizontal reverse direction (-X).

Therefore, when the first haptic actuator 212 and the second haptic actuator 222 are driven by the haptic signals HS1 and HS2 that are in phase with each other, the diaphragm 100 generates the first in-plane vibration component (IPV1) without out-of-plane vibration. and the second in-plane vibration component (IPV2) causes in-plane vibration that vibrates in the horizontal direction, and this in-plane vibration of the diaphragm 100 is not transmitted to the housing 300 by the dampers 400-1 and 400-2. Instead, it is transmitted only to the display device installed on the diaphragm 100.

Figure 6 is a waveform diagram showing the first and second haptic signals according to the out-of-plane vibration mode of the haptic feedback device according to this example, and Figure 7a is a waveform diagram for explaining the haptic feedback generated in the first haptic section shown in Figure 6. It is a cross-sectional view, and FIG. 7B is a cross-sectional view for explaining the haptic feedback generated in the second haptic section shown in FIG. 6.

Referring to FIGS. 6 and 7A, in the first haptic section P1 of the haptic feedback device 10 according to the present example, the first and second haptic signals HS1 and HS2 having anti-phase with each other are the first haptic signal. By being supplied to the actuator 212 and the second haptic actuator 222, respectively, the diaphragm 100 generates torques (T1, T2) in opposite directions from the first haptic actuator 212 and the second haptic actuator 222, respectively. This causes out-of-plane vibration in the upward direction (+Z).

Specifically, in the first haptic section (P1), the first haptic actuator 212 is driven according to the first haptic signal (HS1) in the positive phase to generate a first torque (T1) in the horizontal positive direction (+X), , As a result, a first out-of-plane vibration component (OPV1) having an upward direction (+Z) is generated in the diaphragm 100 according to the first torque (T1) in the horizontal positive direction (+X), and a first out-of-plane vibration component (OPV1) is generated in the horizontal positive direction (+X) A first in-plane vibration component (IPV1) in the horizontal positive direction (+X) is generated according to the first force F1 in the horizontal positive direction (+X) generated by the first torque T1. At the same time, in the first haptic section (P1), the second haptic actuator 222 is driven according to the second haptic signal (HS2) of the opposite phase to generate a second torque (T2) in the horizontal reverse direction (-X), , As a result, a second out-of-plane vibration component (OPV2) having an upward direction (+Z) is generated in the diaphragm 100 according to the second torque (T2) in the horizontal reverse direction (-X), and a second out-of-plane vibration component (OPV2) is generated in the horizontal reverse direction (-X). A second in-plane vibration component (IPV2) in the horizontal reverse direction (-X) is generated according to the second force (F2) in the horizontal reverse direction (-X) generated by the second torque (T2). In this way, when torques (T1, T2) in opposite directions are generated in the first haptic actuator 212 and the second haptic actuator 222, the strengths of the forces (F1, F2) are the same, but in opposite directions (+ The first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV2) with The forces (F1, F2) of the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2) are combined and amplified. As a result, the diaphragm 100 is amplified by combining the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2). The second out-of-plane vibration component (OPV2) causes out-of-plane vibration in the upward direction (+Z).

Referring to FIGS. 6 and 7B, in the first haptic section (P1) of the haptic feedback device 10 according to this example, the first and second haptic signals (HS1, HS2) having anti-phase with each other are the first haptic signal. By being supplied to the actuator 212 and the second haptic actuator 222, respectively, the diaphragm 100 generates torques (T1, T2) in opposite directions from the first haptic actuator 212 and the second haptic actuator 222, respectively. Out-of-plane vibration occurs due to this.

Specifically, in the second haptic section (P2), the first haptic actuator 212 is driven according to the first haptic signal (HS1) of the anti-phase to generate a first torque (T1) in the horizontal reverse direction (-X), , As a result, the first out-of-plane vibration component (OPV1) having a downward direction (-Z) is generated in the diaphragm 100 according to the first torque (T1) in the horizontal reverse direction (-X), and the first out-of-plane vibration component (OPV1) in the horizontal reverse direction (-X) is generated. A first in-plane vibration component (IPV1) in the horizontal reverse direction (-X) is generated according to the first force (F1) in the horizontal reverse direction (-X) generated by the first torque (T1). At the same time, in the second haptic section (P2), the second haptic actuator 222 is driven according to the second haptic signal (HS2) in the positive phase to generate a second torque (T2) in the horizontal positive direction (+X), , As a result, a second out-of-plane vibration component (OPV2) having a downward direction (-Z) is generated in the diaphragm 100 according to the second torque (T2) in the horizontal positive direction (+X), and a second out-of-plane vibration component (OPV2) is generated in the horizontal positive direction (+X). A second in-plane vibration component (IPV2) in the horizontal positive direction (+X) is generated according to the second force (F2) in the horizontal positive direction (+X) generated by the second torque (T2). In this way, when torques (T1, T2) in opposite directions are generated in the first haptic actuator 212 and the second haptic actuator 222, the strengths of the forces (F1, F2) are the same, but in opposite directions (+ The first in-plane vibration component (IPV1) and the second in-plane vibration component (IPV2) with The forces (F1, F2) of the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2) are combined and amplified. As a result, the diaphragm 100 is amplified by combining the first out-of-plane vibration component (OPV1) and the second out-of-plane vibration component (OPV2). The second out-of-plane vibration component (OPV2) causes out-of-plane vibration in the downward direction (-Z).

Accordingly, when the first haptic actuator 212 and the second haptic actuator 222 are driven by haptic signals HS1 and HS2 in opposite phases, the diaphragm 100 generates the first out-of-plane vibration component OPV1 without in-plane vibration. ) and the second out-of-plane vibration component (OPV2) causes out-of-plane vibration that vibrates in the vertical direction (or vertical direction), and this out-of-plane vibration of the diaphragm 100 is transmitted to the housing by the dampers 400-1 and 400-2. It is not transmitted to 300, but only to the display device installed on the diaphragm 100.

As such, the haptic feedback device 10 according to the present example includes a first damper 400-1 disposed between the first haptic module 200-1 and the housing 300, and a second haptic module 200-2. ) and the vibration generated in the vibration plate 100 by the first haptic module 200-1 and the second haptic module 200-2 by the second damper 400-2 disposed between the housing 300. Transmission to the housing 300 can be prevented, and through this, haptic padback can be implemented only in local parts such as the diaphragm 100, and haptic feedback according to the touch of the touch input object can be transmitted only to the touch input object. . In addition, the haptic feedback device 10 according to this example does not change the arrangement positions of the first haptic module 200-1 and the second haptic module 200-2, but Directional haptic feedback can be provided simply by applying haptic signals HS1 and HS2 having in-phase or anti-phase to the second haptic module 200-2.

FIGS. 8 to 13 are diagrams for explaining modified examples of the haptic modules shown in FIG. 1, in which the structure of the vibration bar provided in the haptic modules has been changed. Accordingly, hereinafter only the vibrating bar and related components will be described.

First, referring to FIG. 8, the first vibration bar 210-1 of the first haptic module 200-1 according to an example includes a first support part 210a and a first unit support part 210b.

The first support portion 210a is coupled to one side of the diaphragm 100 and supported by the first damper 400-1, and has a flat plate shape with a constant length and a constant width along the first direction (X). You can. The above-described first elastic member 210-3 is installed in this first support portion 210a.

The first unit support portion 210b is connected to one end of the first support portion 210a so as to be parallel to the second direction (Y) crossing the first direction (X), and supports the first vibration unit 210-2. By doing so, it can have a flat plate shape with a constant length and a constant width parallel to the second direction (Y). For example, the first unit support portion 210b may have a length equal to the short side length of the diaphragm 100. Accordingly, the first vibration bar 210-1 may have a " ┤ " shape in plan view by including the first support portion 210a and the first unit support portion 210b connected to each other.

Meanwhile, the first vibration unit 210-2 is swingably installed in the middle portion of the first unit support portion 210b, or, as shown in FIG. 9, at both edge portions of the first unit support portion 210b. It can be installed swingably. At this time, each of the first vibration units 210-2 installed on both edges of the first unit support unit 210b is driven simultaneously in synchronization with each other by the first haptic signal.

The second vibration bar 220-1 of the second haptic module 200-2 according to one example includes a second support part 220a and a second unit support part 220b.

The second support portion 220a is coupled to the other side of the diaphragm 100 and supported by the second damper 400-2, and has a flat plate shape with a constant length and a constant width along the first direction (X). You can. The above-described second elastic member 220-3 is installed in this second support portion 220a.

The second unit support portion 220b is connected to one end of the second support portion 220a so as to be parallel to the second direction Y and supports the second vibration unit 220-2. Accordingly, the second vibration bar 220-1 may have a "┣" shape in plan view by including the second support portion 220a and the second unit support portion 220b connected to each other. This second unit support portion 220b has a symmetrical structure with the first unit support portion 210b with respect to the center portion of the diaphragm 100.

Meanwhile, the second vibration unit 220-2 is swingably installed in the middle portion of the second unit support portion 220b, or, as shown in FIG. 9, at both edge portions of the second unit support portion 220b. It can be installed swingably. At this time, each of the second vibration units 220-2 installed on both edges of the second unit support unit 220b is driven simultaneously in synchronization with each other by the second haptic signal.

In this example, stronger haptic feedback can be implemented by increasing the coupling area between each of the first haptic module 200-1 and the second haptic module 200-2 and the diaphragm 100.

Next, referring to FIG. 10, the first vibration bar 210-1 of the first haptic module 200-1 according to an example includes a first support part 210a and a pair of first unit supports 210b1, 210b2).

The first support portion 210a is coupled to one side of the diaphragm 100 and supported by the first damper 400-1, and has a flat plate shape with a constant length and a constant width parallel to the second direction (Y). You can. For example, the first support part 210a may have a length equal to the short side length of the diaphragm 100. Here, the first damper 400-1 has a length corresponding to the first support portion 210a. Additionally, the first damper support portion 330-1 provided in the housing 300 to support the first damper 400-1 has a length corresponding to the first support portion 210a.

Each of the pair of first unit supports 210b1 and 210b2 is connected to both edges of the first support 210a in parallel with the first direction By supporting it, it can have a flat plate shape with a constant length and a constant width parallel to the first direction (X). Accordingly, the first vibration bar 210-1 includes a first support part 210a and a pair of first unit support parts 210b1 and 210b2 connected to each other, so that the first vibration bar 210-1 may have a " [ "-shaped shape in plan.

Meanwhile, the first vibration unit 210-2 is swingably installed on each of the pair of first unit supports 210b1 and 210b2, and the first vibration unit 210-2 installed on each of the pair of first unit supports 210b1 and 210b2. Each of the vibration units 210-2 is driven simultaneously in synchronization with each other by the first haptic signal. And, the first elastic member 210-3 is installed on each of the pair of first unit support parts 210b1 and 210b2.

The second vibration bar 220-1 of the second haptic module 200-2 according to an example includes a second support part 220a and a pair of second unit supports 220b1 and 220b2.

The second support portion 220a is coupled to one side of the diaphragm 100 and supported by the second damper 400-2, and has a flat plate shape with a constant length and a constant width parallel to the second direction (Y). You can. For example, the second support part 220a may have a length equal to the short side length of the diaphragm 100. Here, the second damper 400-2 has a length corresponding to the second support portion 220a. Additionally, the second damper support portion 330-2 provided in the housing 300 to support the second damper 400-2 has a length corresponding to the second support portion 220a.

Each of the pair of second unit supports 220b1 and 220b2 is connected to both edges of the second support 220a in parallel with the first direction (X), and provides a second vibration unit 220-2. By supporting it, it can have a flat plate shape with a constant length and a constant width parallel to the first direction (X). Accordingly, the second vibration bar 220-1 includes a second support portion 220a and a pair of second unit support portions 220b1 and 220b2 that are connected to each other, so that the second vibration bar 220-1 may have a “］” shape in plan.

Meanwhile, the second vibration unit 220-2 is swingably installed on each of the pair of second unit supports 220b1 and 220b2, and the second vibration unit 220-2 is installed on each of the pair of second unit supports 220b1 and 220b2. Each of the vibration units 220-2 is driven simultaneously in synchronization with each other by the second haptic signal. And, the second elastic member 220-3 is installed on each of the pair of second unit support parts 220b1 and 220b2.

Optionally, the first vibration bar 210-1 of this example includes three first unit supports 210b1, 210b2, respectively connected to the middle portion and both edges of the first support 210a, as shown in FIG. 11. By including 210b3), it can have an " E " shape in plan. In this case, each of the first vibration unit 210-2 and the first elastic member 210-3 is installed on three first unit supports 210b1, 210b2, and 210b3. In addition, the second vibration bar 220-1 also includes three second unit supports 220b1, 220b2, and 220b3 respectively connected to the middle portion and both edges of the second support 220a, so that it has a " ∃ " shape in plan. You can have In this case, each of the second vibration unit 220-2 and the second elastic member 220-3 is installed on three second unit support portions 220b1, 220b2, and 220b3.

In this example, stronger haptic feedback can be implemented through a greater number of haptic modules while increasing the overlap area between the haptic module and the diaphragm 100.

Next, referring to FIG. 12, the first vibration bar 210-1 of the first haptic module 200-1 according to an example includes a first support part 210a, a first unit support part 210b, and a first support part 210-1. 1 Includes a connection portion 210c.

The first support part 210a is coupled to one side of the diaphragm 100 and supported by the first damper 400-1. Since it is the same as the first support part 210a shown in FIGS. 10 and 11, Redundant explanation for this will be omitted.

The first unit support portion 210b is disposed in parallel with the first support portion 210a and supports at least one first vibration unit 210-2, and has a constant length and a constant width parallel to the second direction (Y). It may have a flat plate shape.

The first connection portion 210c connects the first support portion 210a and the first unit support portion 210b, and may have a flat plate shape with a constant length and a constant width along the first direction (X). Accordingly, the first vibration bar 210-1 may have an “H” shape in plan by including a first support part 210a, a first unit support part 210b, and a first connection part 210c that are connected to each other. there is.

Meanwhile, the first vibration unit 210-2 may be swingably installed on both edges of the first unit support portion 210b. Each of the first vibration units 210-2 installed on both edges of the first unit support 210b is driven simultaneously in synchronization with each other by the first haptic signal. And, the first elastic member 210-3 is installed on the first connection portion 210c.

The second vibration bar 220-1 of the second haptic module 200-2 according to an example includes a second support part 220a, a second unit support part 220b, and a second connection part 220c.

The second support part 220a is coupled to one side of the diaphragm 100 and supported by the second damper 400-2. Since it is the same as the second support part 220a shown in FIGS. 10 and 11, Redundant explanation for this will be omitted.

The second unit support portion 220b is disposed in parallel with the second support portion 220a and supports at least one second vibration unit 220-2, and has a constant length and a constant width parallel to the second direction (Y). It may have a flat plate shape.

The second connection portion 220c connects the second support portion 220a and the second unit support portion 220b, and may have a flat plate shape with a constant length and a constant width along the first direction (X). Accordingly, the second vibration bar 220-1 may have an “H” shape in plan by including a second support part 220a, a second unit support part 220b, and a second connection part 220c that are connected to each other. there is.

Meanwhile, the second vibration unit 220-2 may be swingably installed on both edges of the second unit support portion 220b. Each of the second vibration units 220-2 installed on both edges of the second unit support unit 220b is driven simultaneously in synchronization with each other by the second haptic signal. And, the second elastic member 220-3 is installed in the second connection portion 220c.

Optionally, the first vibration bar 210-1 of the present example, as shown in FIG. 13, is a pair of first bars connecting between both edges of the first support part 210a and the first unit support part 210b. By including the connection portions 210c1 and 210c2, it can have a " □ " shape in plan view. In this case, each of the first elastic members 210-3 is installed in a pair of first connection portions 210c1 and 210c2, respectively. In addition, the second vibration bar 220-1 also includes a pair of second connection parts 220c1 and 220c2 connecting both edges of the second support part 220a and the second unit support part 220b, so that it is flat. □ “It can have a ruler shape. In this case, each of the second elastic members 220-3 is installed in a pair of second connection portions 220c1 and 220c2, respectively.

In this example, stronger haptic feedback can be implemented through a greater number of haptic modules while increasing the overlap area between the haptic module and the diaphragm 100.

Figure 14 is an exploded view showing a haptic feedback device according to an example of the present application.

Referring to FIG. 14, the haptic feedback device 20 according to an example includes a vibration plate 100, a first haptic module 200-1, a second haptic module 200-2, and a third haptic module 200-3. ), fourth haptic module (200-4), housing 300, first damper (400-1), second damper (400-2), third damper (400-3), and fourth damper (400) -4) Includes.

The diaphragm 100 has a flat plate shape, which is the same as the above-described example, so redundant description thereof will be omitted.

The first haptic module 200-1 is driven by the first haptic signal to generate torque to vibrate the diaphragm 100. This first haptic module 200-1 has the same configuration as the first haptic module in the above-described example, except that it is installed at the first side corner of the diaphragm 100, for example, in the upper left corner in a planar manner. , the same reference numerals will be assigned to these and duplicate descriptions thereof will be omitted.

The second haptic module 200-2 is driven by the second haptic signal to generate torque to vibrate the diaphragm 100. This second haptic module 200-2 is the second haptic module of the above-described example, except that it is installed on the second side edge portion parallel to the first side edge portion of the diaphragm 100, for example, in the upper right corner in a planar manner. Since it has the same configuration as the module, the same reference numerals will be assigned to it and duplicate description will be omitted.

The third haptic module 200-3 is driven in the same way as the first haptic module 200-1 by the first haptic signal to generate torque to vibrate the diaphragm 100. This third haptic module 200-3 is installed in the third side corner of the vibration plate 100, for example, in the lower left corner in a planar manner, so as to be parallel to the first haptic module 200-1. Since it has the same configuration as the first haptic module of one example, the same reference numerals will be assigned to it and duplicate description thereof will be omitted.

The fourth haptic module 200-4 is driven in the same way as the second haptic module 200-2 by the second haptic signal to generate torque to vibrate the diaphragm 100. This fourth haptic module 200-4 is installed in the fourth corner of the diaphragm 100, for example, in the lower right corner in a planar manner, so as to be parallel to the second haptic module 200-2. Since it has the same configuration as the second haptic module of one example, the same reference numerals will be assigned to it and duplicate description thereof will be omitted.

The housing 300 accommodates first to fourth haptic modules (200-1, 200-2, 200-3, 200-4) and first to fourth dampers (400-1). , 400-2, 400-3, 400-4).

The housing 300 according to an example has a box shape with an open upper surface, and includes a housing plate 310, a housing side wall 320 provided vertically along the edge of the housing plate 310, and a housing plate 310. A first damper support portion 330-1 provided at a corner of the first side, a second damper support portion 330-2 provided at a corner of the second side of the housing plate 310, and a corner portion of the third side of the housing plate 310. It includes a third damper support part 330-3 provided in and a fourth damper support part 330-4 provided at the fourth side corner of the housing plate 310.

The first damper 400-1 is disposed between the other side of the first haptic module 200-1 and the first damper support part 330-1 of the housing 300 to maintain the first haptic module 200-1. Prevents vibration generated from being transmitted to the housing 300.

The second damper 400-2 is disposed between the other side of the second haptic module 200-2 and the second damper support part 330-2 of the housing 300 to maintain the second haptic module 200-2. Prevents vibration generated from being transmitted to the housing 300.

The third damper 400-3 is disposed between the other side of the third haptic module 200-3 and the third damper support part 330-3 of the housing 300 to maintain the third haptic module 200-3. Prevents vibration generated from being transmitted to the housing 300.

The fourth damper 400-4 is disposed between the other side of the fourth haptic module 200-4 and the fourth damper support part 330-4 of the housing 300 to maintain the fourth haptic module 200-4. Prevents vibration generated from being transmitted to the housing 300.

As such, each of the first to fourth dampers 400-1, 400-2, 400-3, and 400-4 has the same configuration as the first damper or the second damper in the above-described example, except for the arrangement position. , redundant explanation for this will be omitted.

As such, the haptic feedback device 20 according to the present example uses the first and third haptic modules 200-1 and 200-3 arranged side by side on one side of the diaphragm 100 according to the first haptic signal. They are driven simultaneously, and the second and fourth haptic modules 200-2 and 200-4 arranged in parallel with each other on the other side of the diaphragm 100 are simultaneously driven according to the second haptic signal. At this time, the first haptic signal and the second haptic signal may have the same phase or anti-phase with each other.

For example, when the first haptic signal and the second haptic signal are in phase with each other, as shown in FIGS. 4, 5A, and 5B, the diaphragm 100 vibrates in-plane, and the diaphragm 100 The in-plane vibration is not transmitted to the housing 300 by the dampers 400-1, 400-2, 400-3, and 400-4, but is transmitted only to the display device installed on the diaphragm 100.

For example, when the first haptic signal and the second haptic signal are out of phase with each other, as shown in FIGS. 6, 7A, and 7B, the diaphragm 100 vibrates out of plane, and the diaphragm 100 The out-of-plane vibration is not transmitted to the housing 300 by the dampers 400-1, 400-2, 400-3, and 400-4, but is transmitted only to the display device installed on the diaphragm 100.

As such, the haptic feedback device 20 according to this example can provide the same effect as the haptic feedback device 10 shown in FIG. 1 and implement stronger haptic feedback through four haptic modules.

FIG. 15 is a diagram showing an electronic device with a haptic feedback function according to an example of the present application, and FIG. 16 is a cross-sectional view taken along line II-II' shown in FIG. 15.

Referring to FIGS. 15 and 16 , an electronic device with a haptic feedback function according to an example includes a haptic feedback device 500, a display panel 510, a touch screen panel 550, and a cover window 570.

Since the haptic feedback device 500 has the same configuration as the haptic feedback device 10 shown in FIGS. 1 to 14, the same reference numerals are assigned to these configurations, and duplicate descriptions thereof will be omitted. .

The display panel 510 may be an organic light emitting display panel that displays images using light emission from organic light emitting elements. At this time, the display panel 510 may have a flat shape, a curved shape, or a bent shape. The display panel 510 according to one example includes a substrate 511, a pixel array layer 513, and an encapsulation layer 515.

The substrate 511 supports the pixel array layer 513 and includes a flexible material. For example, the substrate 511 may be made of polyimide film, but is not limited thereto. Additionally, the rear surface of the substrate 511 may be combined with a back plate. The back plate is attached to the back of the substrate 511 with an optical adhesive to maintain the flexible substrate 310 in a flat state.

Meanwhile, in the haptic feedback device 500, the diaphragm 100 may be the substrate 511 of the display panel 510 or the back plate. In this case, the haptic feedback device 500 is integrated into the rear of the display panel 510.

The pixel array layer 513 includes a plurality of pixels provided in each pixel area defined by the intersection of a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels may include a switching transistor connected to the gate line and the data line, a driving transistor that receives a data signal from the switching transistor, and an organic light emitting element that emits light by the data current supplied from the driving transistor. The organic light-emitting device includes an anode electrode connected to a driving transistor, an organic light-emitting layer provided on the anode electrode, and a cathode electrode provided on the organic light-emitting layer.

The encapsulation layer 515 is provided on the entire upper surface of the substrate 511 to cover the pixel array layer 513. This encapsulation layer 515 serves to protect the organic light emitting device from oxygen or moisture.

Additionally, the display panel 510 according to one example may further include a barrier film provided on the encapsulation layer 515 . The barrier film may be formed by applying an inorganic insulating film on an organic insulating film. The barrier film is primarily intended to prevent moisture or oxygen from penetrating into each pixel, and may be made of a material with low moisture permeability.

The touch screen panel 550 may be attached to the front of the display panel 510 or to the back of the cover window 570 facing the display panel 510. This touch screen panel 550 includes a plurality of touch sensors whose mutual capacitance or self-capacitance changes depending on the touch of a touch input object, for example, a user's finger. As an example, the mutual capacitance touch sensor includes a touch driving electrode to which a touch driving signal is supplied from a touch driving circuit, and a touch sensing electrode that overlaps or is disposed in parallel with the touch driving electrode and is connected to the touch driving circuit. The mutual capacitance of these touch sensors increases when a touch input object is touched. As an example, a self-capacitive touch sensor includes a plurality of touch electrodes connected to a touch driving circuit. The self-capacitance of such a touch sensor decreases when a touch input object is touched.

The cover window 570 is supported on the housing 300 of the haptic feedback device 500 to cover the touch screen panel 550. At this time, a buffering member 580 such as a foam pad is disposed between the housing side wall 320 and the cover window 570 of the housing 300. This buffering member 580 cushions the impact applied to the cover window 570 and prevents it from being transmitted to the housing 300, and prevents the haptic feedback resulting from the operation of the haptic feedback device 500 from being transmitted to the housing 300. prevent it from happening.

As such, in this example, haptic feedback can be provided to the touch input object according to the operation of the haptic feedback device 500 that responds to the touch of the touch input object. In particular, in this example, haptic feedback can be provided only to the touch input object by preventing haptic feedback from being transmitted to the housing 300 through the damper. Additionally, in this example, the electronic device can be slimmed by using the substrate 511 of the display panel 510 as a diaphragm of the haptic feedback device 500.

FIG. 17 is a cross-sectional view taken along line II-II' shown in FIG. 15.

Referring to FIGS. 15 and 17 , an electronic device having a haptic feedback function according to an example includes a haptic feedback device 500, a display panel 610, a backlight unit 620, a panel guide 630, and a rear cover 640. ), a touch screen panel 550, and a cover window 570.

Since the haptic feedback device 500 has the same configuration as the haptic feedback device 10 shown in FIGS. 1 to 14, the same reference numerals are assigned to these configurations, and duplicate descriptions thereof will be omitted. .

The display panel 610 is composed of a lower substrate 611 and an upper substrate 613 that are bonded to each other with a liquid crystal layer in between, and displays a predetermined image using light emitted from the backlight unit 6620.

The lower substrate 611 is a thin film transistor array substrate and includes a plurality of pixels formed in each pixel area crossed by a plurality of gate lines and a plurality of data lines. Each pixel may include a thin film transistor connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

The upper substrate 613 includes a pixel defining pattern that defines an opening area overlapping each pixel area formed in the lower substrate 611, and a color filter formed in the opening area. This upper substrate 613 is bonded to the lower substrate 611 with the liquid crystal layer interposed therebetween by a sealant.

A lower polarizing member 615 having a first polarization axis is attached to the back of the lower substrate 611, and an upper polarizing member 615 having a second polarization axis intersecting the first polarization axis is attached to the front of the upper substrate 613. Member 617 is attached.

The backlight unit 620 includes a light guide plate 621, a light source module, a reflective sheet 623, and an optical sheet portion 625.

The light guide plate 621 has a square plate shape to include a light incident portion provided on at least one side. This light guide plate 621 emits light incident from the light source module through the light entrance portion to the rear of the display panel 610.

The light source module is arranged to face the light incident part of the light guide plate 621 and irradiates light to the light incident part of the light guide plate 621. A light source module according to one example includes a light emitting diode array having a plurality of light emitting diode packages.

The reflective sheet 623 is disposed on the rear side of the light guide plate 621 and supports the light guide plate 621 and the panel guide 630. This reflective sheet 623 minimizes light loss by reflecting light incident through the lower surface of the light guide plate 621 toward the light guide plate 621.

The optical sheet portion 625 is disposed on the light guide plate 621 and serves to improve the luminance characteristics of the light irradiated from the light guide plate 621 to the display panel 610. For example, the optical sheet portion 625 may include a lower diffusion sheet, a prism sheet, and an upper diffusion sheet, but is not limited thereto, and is not limited to a diffusion sheet, a prism sheet, and a dual brightness enhancement film (dual brightness enhancement film). film), and lenticular sheets.

The panel guide 630 is formed in the shape of a square strip and is fixed to the reflective sheet 623 of the backlight unit 620. This panel guide 630 supports the rear edge of the display panel 610 and surrounds the side of the backlight unit 620.

The rear cover 640 is disposed on the vibration plate 100 of the haptic feedback device 500 and accommodates the backlight unit 620. To this end, the rear cover 640 includes a storage space provided by the cover plate and the cover side wall. Accordingly, the backlight unit 620 is stored in the storage space of the rear cover 640 and supported on the cover plate of the rear cover 640. And, each side of the panel guide 630 is surrounded by the cover side wall of the rear cover 640.

Meanwhile, in the haptic feedback device 500, the diaphragm 100 may be a cover plate of the rear cover 640, and in order to reduce the weight of the electronic device, the rear cover 640 may be omitted. In this case, the diaphragm 100 ) directly supports the rear of the backlight unit 620.

The touch screen panel 550 may be attached to the front of the display panel 510 or to the back of the cover window 570 facing the display panel 510. Since this touch screen panel 550 is the same as the above-described example, redundant description thereof will be omitted.

The cover window 570 is supported on the housing 300 of the haptic feedback device 500 to cover the touch screen panel 550. At this time, a buffering member 580 such as a foam pad is disposed between the housing side wall 320 and the cover window 570 of the housing 300. This buffering member 580 cushions the impact applied to the cover window 570 and prevents it from being transmitted to the housing 300, and prevents the haptic feedback resulting from the operation of the haptic feedback device 500 from being transmitted to the housing 300. prevent it from happening.

Optionally, the touch screen panel 550 may be built into the display panel 510. That is, the common electrode of the display panel 510 is used as a touch sensing electrode in the touch sensing mode, and is used as a liquid crystal driving electrode along with the pixel electrode in the display mode. In this case, the display panel 510 may be an in-cell touch-type display panel, more specifically, a self-capacitance type in-cell touch-type display panel. For example, the in-cell touch display panel may be a liquid crystal display panel of a touch sensor-integrated liquid crystal display device disclosed in Korean Patent Publication No. 10-2013-0015584, but is not limited thereto.

As such, in this example, haptic feedback can be provided to the touch input object according to the operation of the haptic feedback device 500 that responds to the touch of the touch input object. In particular, in this example, haptic feedback can be provided only to the touch input object by preventing haptic feedback from being transmitted to the housing 300 through the damper. Additionally, in this example, the electronic device can be slimmed by using the rear cover 640 as a diaphragm of the haptic feedback device 500.

FIGS. 18A and 18B are graphs showing simulation results for the vibration acceleration of the electronic device according to this example. FIG. 18A shows the geometric X-axis direction, Y-axis direction, and Z-axis direction using an acceleration sensor mounted on the electronic device. The in-plane vibration acceleration generated in the display panel was measured, and Figure 18b shows the out-of-plane vibration acceleration generated in the display panel using an acceleration sensor mounted on the electronic device in the geometric X-axis direction, Y-axis direction, and Z-axis direction. It was measured.

First, as can be seen in Figure 18a, in the case of the in-plane vibration mode, the vibration acceleration in the The directional vibration acceleration was measured to be almost zero. As described above, in the in-plane vibration mode, it can be confirmed that the out-of-plane vibration components in the Y-axis direction cancel each other because they have opposite directions, and the in-plane vibration components in the X-axis direction have the same direction, so they are combined and amplified. there is. Accordingly, the present application can vibrate the display panel in-plane without out-of-plane vibration in the in-plane vibration mode.

Next, as can be seen in Figure 18b, in the case of out-of-plane vibration mode, the vibration acceleration in the Z-axis direction was measured as a relatively high value, and the vibration acceleration in the Y-axis direction was measured as a relatively very small value. The axial vibration acceleration was measured to be almost zero. As described above, in the out-of-plane vibration mode, it can be confirmed that the in-plane vibration components in the there is. Accordingly, the present application can vibrate the display panel out-of-plane without in-plane vibration in the out-of-plane vibration mode.

As such, the electronic device according to the present example provides in-plane vibration or out-of-plane vibration only to the touch input object through haptic feedback having the degrees of freedom of in-plane vibration and out-of-plane vibration according to the driving of the haptic feedback device 500 that responds to the touch of the touch input object. can be provided.

Meanwhile, in Figure 15, a smart phone is shown as an electronic device according to the present application, but it is not limited thereto, and the electronic device according to the present application includes an electronic notebook, an e-book, a portable multimedia player (PMP), navigation, and a mobile device. It may be a portable electronic device such as a phone, personal computer (tablet PC), smart watch, watch phone, wearable device, mobile communication terminal, and game console.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which this application belongs that various substitutions, modifications, and changes are possible without departing from the technical details of the present application. It will be clear to those who have the knowledge of. Therefore, the scope of the present application is indicated by the claims described later, and the meaning and scope of the claims and all changes or modified forms derived from the equivalent concept should be interpreted as being included in the scope of the present application.

10, 500: Haptic feedback device 100: Vibration plate
200-1: first haptic module 200-2: second haptic module
300: Housing 400-1: First damper
400-2: second damper 510: display panel
550: Touch screen panel 570: Cover window

Claims (17)

tympanum;
a first haptic module having a first vibration bar coupled to one side of the vibration plate and at least one first vibration unit suspended from one side of the first vibration bar and driven by a first haptic signal;
A second vibration bar symmetrical to the first haptic module with respect to the middle portion of the diaphragm and coupled to the other side of the diaphragm, and at least one device hanging on one side of the second vibration bar and driven by a second haptic signal a second haptic module having a second vibration unit;
a housing supporting the first haptic module and the second haptic module;
a first damper disposed between the other side of the first vibration bar and the housing; and
It includes a second damper disposed between the other side of the second vibration bar and the housing,
The at least one first vibration unit includes a first cantilever portion swingably installed on the first vibration bar and a first haptic actuator suspended from the first cantilever portion,
The at least one second vibration unit includes a second cantilever portion swingably installed on the second vibration bar and a second haptic actuator suspended from the second cantilever portion. According to claim 1,
The first vibration unit and the second vibration unit each use a pendulum motion to vibrate the vibration plate in-plane or out-of-plane. delete According to claim 1,
The at least one first vibration unit further includes a first mass provided in the first haptic actuator,
The at least one second vibration unit further includes a second mass provided in the second haptic actuator. According to claim 1,
The first haptic actuator and the second haptic actuator each perform a pendulum motion in the same direction to vibrate the diaphragm in-plane. According to claim 5,
The first haptic signal and the second haptic signal are each alternating current signals having the same phase as each other. According to claim 1,
The first haptic actuator and the second haptic actuator each perform a pendulum movement in opposite directions to vibrate the diaphragm out of plane. According to claim 7,
The first haptic signal and the second haptic signal are alternating current signals having opposite phases. According to claim 2,
The first vibration bar includes a first support portion coupled to one side of the vibration plate and supported by the first damper, and at least one first unit connected to the first support portion and supporting the at least one first vibration unit. Includes a support part,
The second vibration bar includes a second support part coupled to the other side of the vibration plate and supported by the second damper, and at least one second unit connected to the second support part and supporting the at least one second vibration unit. A haptic feedback device comprising a support. According to clause 9,
The first haptic module further includes at least one first elastic member coupled to the first support or the at least one first unit support and supported on the housing,
The second haptic module further includes at least one second elastic member coupled to the second support or the at least one second unit support and supported on the housing. According to claim 10,
The first haptic module has two first vibration units installed at both ends of the at least one first unit support portion, and the two first vibration units are arranged at both edges of the vibration plate so as to be parallel to each other,
The second haptic module has two second vibration units installed at both ends of the at least one second unit support portion, and the two second vibration units are arranged at both edges of the vibration plate so as to be parallel to each other. . According to clause 9,
The first vibration bar further includes at least one first connection portion connecting the first support portion and the at least one first unit support portion,
The second vibration bar further includes at least one second connection portion connecting the second support portion and the at least one second unit support portion. According to claim 12,
The first haptic module further includes at least one first elastic member coupled to the at least one first connection portion and supported on the housing;
The second haptic module further includes at least one second elastic member coupled to the at least one second connection portion and supported on the housing. The haptic feedback device of any one of claims 1, 2, and 4 to 13;
a display panel disposed on the haptic feedback device and having a pixel array layer provided on a substrate; and
An electronic device with a haptic function, including a touch screen panel overlapping the display panel. According to claim 14,
An electronic device with a haptic function, wherein the diaphragm of the haptic feedback device is the substrate. According to claim 14,
a rear cover having a storage space provided by a cover plate and a cover side wall; and
An electronic device with a haptic function, further comprising a backlight unit stored in the storage space and emitting light to the display panel. According to claim 16,
An electronic device with a haptic function, wherein the diaphragm of the haptic feedback device is a cover plate of the rear cover.

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